ZCOM Tables and Data Structures

Physical Terminal Tables

Table 3-12

Physical Terminal Tables (User Maintainable Area

 

PTUSER) (Continued)

 

 

 

 

 

 

Field Name

Field Description

Field Type

Size (Bytes)

 

 

 

 

PTCNFG

Special configuration

uns.char [8]

8

 

 

 

 

PTCWCT

Control write counter

uns.int

4

 

 

 

 

PTTXCT

Transmit message counter

uns.int

4

 

 

 

 

PTRXCT

Receive message counter

uns.int

4

 

 

 

 

PTERCT

Error counter

uns.int

4

 

 

 

 

PTZLU - Owning terminal ZLU number

PTZCS - Owning terminal ZLU checksum

The terminal ZLU number points back to the ZLU table entry for the owner of the terminal. The ZLU contains the checksum for the ZLU as well as its number. It is used by the driver to derive the source ZLU for all messages received for this physical terminal. This parameter is initially setup by TTGEN in the memory image file. These fields are maintained by the ZCOM subsystem when ZLU and terminal linkage are modified.

PTMUX - Mux number of terminal

The Mux interface number of the terminal. This is set initially through the TTGEN configuration file and is subsequently maintainable.

PTPORT - Terminal port number

The port number of the terminal on the Mux interface. This is set initially through the TTGEN configuration file and is subsequently maintainable.

PTTERM - Terminal number within port

The terminal number on the Mux interface card within the port. This is set initially through the TTGEN configuration file and is subsequently maintainable. This field has been replaced by the ptmx_term field. It remains valid for 2/8-channel cards for backwards compatibility reasons.

PTMX_TERM - Terminal number within port or card

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Chapter 3